EP1214712B1 - Procede de recherche de donnees d'images animees sur la base d'informations de recherche de donnees d'images animees fondees sur des legendes - Google Patents

Procede de recherche de donnees d'images animees sur la base d'informations de recherche de donnees d'images animees fondees sur des legendes Download PDF

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Publication number
EP1214712B1
EP1214712B1 EP99941844A EP99941844A EP1214712B1 EP 1214712 B1 EP1214712 B1 EP 1214712B1 EP 99941844 A EP99941844 A EP 99941844A EP 99941844 A EP99941844 A EP 99941844A EP 1214712 B1 EP1214712 B1 EP 1214712B1
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Prior art keywords
caption
information
moving picture
picture data
data
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German (de)
English (en)
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EP1214712A1 (fr
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Kwang Su Kim
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/06—Foreign languages
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • G11B27/007—Reproducing at a different information rate from the information rate of recording reproducing continuously a part of the information, i.e. repeating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Definitions

  • the present invention relates to a method of creating caption-based search information for moving picture stream of video title recorded on a disk storage medium and performing search of moving picture stream by using the caption-based search information in a video disk reproduction apparatus like DVD player, and a reproduction apparatus using such method.
  • VCR video cassette recorder
  • US-A-5 703 655 discloses a system and method for retrieving segments of stored video programs using closed caption text data.
  • the closed caption text data is extracted from video programming signals received by the system.
  • Text records based on the extracted closed caption data are generated.
  • Each text record is derived from the closed caption data for a single continuous video segment to which the text record serves as an index or key in retrieving this video segment.
  • Each text record (a) has sufficient content to adequately describe the content of the video segment to which it serves as an index; and (b) corresponds to a video segment focused on a small number of topics.
  • each text record is generated so that it has a predetermined maximum length and so that it is derived from the closed caption data for a single uninterrupted speaker.
  • video requests or queries input by users are evaluated either by comparing query terms with terms in the text records, or by comparing an interpretation of query terms with an interpretation of terms in the text records. Subsequently, video segment location information associated with each text record satisfying a query is used to retrieve the video segment to which the text record is an index.
  • a real time text translation system which records audio/visual segments as well as a verbatim transcription of speech associated with the audio/visual segments and pointers that cross-index specific portions of the verbatim transcription with associated audio/visual segments.
  • a retrieval system searches the previously stored verbatim transcription for specific words or phrases and then uses the associated pointers to allow rapid location of the audio/visual segments corresponding to the specific words or phrases located in the search. In this way, specific audio/visual segments can be located and retrieved quickly.
  • DVD digital versatile disk
  • DVD-ROM that has a diameter of 120 mm and a storage capacity of around 4.7 GB on one side is suited for storage of several video titles in which multiple sub-picture channels and multiple audio channels are provided.
  • caption data is recorded in the sub-picture channels in the form of bit-mapped image signals. While DVD is reproduced, the sub-picture data is read out and is then added to an image signal so as to display the caption.
  • the present invention provides a method of creating caption-based search information for moving picture data of a data storage medium, comprising the steps of: searching moving picture data recorded on the storage medium for data including caption information; obtaining the location of moving picture data to be concurrently reproduced with the caption information discovered in said searching step; and storing link information including the caption information and the location of the corresponding moving picture data.
  • the method of performing caption-based search for moving picture data of a data storage medium comprises the steps of: creating and storing link information including caption information and moving picture data to be reproduced concurrently with the caption information; displaying part of the stored caption information; searching the created link information for the location of moving picture data, which is correspondent to a particular caption information chosen by a viewer from a list of caption information displayed on a screen; and resuming reproduction of moving picture data of the storage medium from the location of moving picture data discovered by said searching step.
  • all caption data are extracted while video titles recorded on a DVD are scanned, and they are stored together with location information of moving picture data, each of which is linked to its associated caption data in terms of reproduction time.
  • location information of moving picture data each of which is linked to its associated caption data in terms of reproduction time.
  • a list of parts of the caption data is displayed on a screen in which a viewer can choose a caption the viewer wishes to listen or see.
  • the location of moving picture data linked with the selected caption is obtained from the link information between caption data and moving picture data. The reproduction of the DVD is then resumed at the location of the moving picture data.
  • the present invention provides a rapid, exact, and automatic way of searching for moving picture data which is reproduced concurrently with a caption chosen by a viewer, so that it is very useful for a person to practice listening and speaking foreign language repetitively while viewing the title of a disk.
  • the volume space of a DVD has the physical sector area (PSA) and the logical sector area (LSA), in which user data is recorded as 2048-byte logical sectors.
  • PSD physical sector area
  • LSA logical sector area
  • the start location of the logical sector area which is located by logical sector number (LSN) #0, is positioned outward away from the start location of the physical sector area by a predetermined distance. That is, the location of the sector of LSN #0 is the same as that of the physical sector number of 0x30000.
  • the volume space consists of a volume and file structure management area and a file data structure area.
  • a "main volume descriptor sequence” containing a "volume recognition sequence", a "volume ID”, a “date and time”, and a "logical volume integrity address” and a "reserved volume descriptor sequence” are stored in logic sectors LSN #0 to LSN #256.
  • Information concerning the files stored in the file data structure area which includes a "file set descriptor” containing file names and their start location and size, a "file identifier descriptor", and a "file entry” is stored in logic sectors LBN (logical block number) #0 to LBN # (q-1).
  • the file structure area is made up of a video manager and a plurality of video title sets VTS #1-#K, where K is the number of video title sets.
  • the video manager VMG stores the video manager information VMGI about the entire disk (denoted by VIDEO_TS.IFO) and information needed to build a volume menu which is used to set and change reproduction control of the entire volume (denoted by VIDEO_TS.VOB).
  • the file data structure area stores a plurality of video object sets VOBS, each being made up of video objects VOB arranged in a time series, as shown in FIG. 4 .
  • Each VOB is made up of a plurality of cells, each containing playback sequence and playback control information.
  • Each cell has information concerning a sequence of a plurality of video object units (VOBU), arranged in a time series.
  • VOBU video object units
  • a VOBU is a multiplexed set of the various kinds of data, each of the multiplexed pieces having a reproduction time between 0.4 and 1.0 seconds.
  • a VOBU comprises navigation data and presentation data which includes video data, audio data, and sub-picture data.
  • Pieces of such data within a VOBU are respectively called video packs, audio packs, and sub-picture packs, each of which is 2048 Bytes in size and is the same size as a logical sector on the DVD. It is possible that no sub-picture data is provided in a VOBU.
  • the structure of a presentation pack is described with reference to FIG. 5 .
  • the presentation packs comprise a "pack header”, a "packetized elementary stream (PES) header", a "substream ID” for information on language as sub-picture data, and a "data area” in which audio, video, or sub-picture data are recorded.
  • the pack header includes a "pack start code”, a “system clock reference” (SCR) defining the reference time for synchronized audiovisual data playback, and a “multiplex (MUX) rate”.
  • SCR system clock reference
  • MUX multiplex
  • the PES header includes "start codes” for audio, video, or sub-picture data.
  • the packetized elementary stream PES indicates a whole data stream exempting the pack header of 14 Bytes, as shown in FIG. 5 , and is considered as a data stream of common type.
  • the data construction of a navigation pack is shown in FIG. 6 .
  • the navigation pack comprises a "pack header”, a "system header”, a “presentation control information (PCI)", and "data search information (DSI)".
  • a navigation pack is placed at the beginning of each of video object units VOBU.
  • VMGI video manger information
  • VTSI video title set information
  • PGCI program chain information
  • FIG. 9 depicts a block diagram showing the construction of an optical disk reproduction apparatus to which the apparatus of the present invention is applied, comprising an optical pickup 2 for reading out information recorded in an optical disk by using a light beam irradiated by an LED; an radio-frequency (RF) demodulator 3 for demodulating the signal detected by the optical pickup into binary signal; a digital signal processor 4 for processing the demodulated binary signal to obtain recorded digital data by utilizing a synchronized clock; an audio/video (A/V) signal processor 5 for decompressing audio and video data stream and outputting them to an external device; a servo unit 7 for servo-controlling a driving unit of the optical disk on the basis of focus error signal and tracking error signal; a sled motor 13 for moving the optical pickup in the radial direction of the optical disk under control of the servo unit; a spindle motor 14 for rotating the optical disk under control of the servo unit; a sync clock generator 8 for generating the clock synchronized with the binary signal from the RF
  • a method of creating caption-based moving picture data search information embodied in the DVD player of FIG. 9 is described below in detail with reference to flowcharts of FIGS. 10 and 11 .
  • volume structure search mode is set to read data stored in the volume structure area (S10).
  • the optical pickup 2 is moved to the sector of LSN #256 to read out "main volume descriptor sequence address" which is stored in the "1st anchor point" (S11). By using the address, "main volume descriptor sequence” is read out and "logical volume integrity address” is obtained from a field of the "main volume descriptor sequence”.
  • the DVD player Upon completion of reading all information required, the DVD player is entered into an operation mode in which a caption-based moving picture data search information, or so-called sub-picture search table shown in FIG. 12 is created based on the data stored in volume structure, file structure, and navigation data (S17).
  • a caption-based moving picture data search information or so-called sub-picture search table shown in FIG. 12 is created based on the data stored in volume structure, file structure, and navigation data (S17).
  • FIG. 11 shows a detailed flowchart of creating the sub-picture search table which is used for caption-based search of moving picture data.
  • the sub-picture search table creation mode S30
  • the number of video title sets VTS, K the integer value ⁇ K' of the video title set information VTS_0K_0.IFO
  • a "video title set table (VTS table)" is created, as shown in FIG. 12 (S31).
  • the number of PTTs and the start locations and the number of sub-picture data thereof are extracted from the first video title set information VTS_01_0.IFO and are then used to create "PTT table” (S32).
  • Sub-picture data belonging to each PTT are arranged in the tabular form, i.e., a "sub-picture table” is created, as shown in FIG. 12 .
  • a "sub-picture search table” is created in which sub-picture data belonging to each PTT is associated with the corresponding moving picture data. Note that if multiple languages are provided in video titles, the "sub-picture table” has multiple rows and “sub-picture search table” has multiple columns for each entry.
  • Each entry of the "sub-picture search table” has as many columns as the number of sub-picture channels for multiple languages and location information of the moving picture data which are concurrently reproduced with the sub-picture data.
  • sub-picture data located by identifying the sub-stream ID of packs (the sub-stream of sub-picture data packet ranges from 0x20 to 0x3F) and location information thereof is stored in a row of the "sub-picture search table” (S33). Therefore, sub-picture data and location information thereof are indicated by same index value of the "sub-picture search table".
  • the location information of a sub-picture data is represented by the logical block number of the start location of the navigation pack belonging to the video object unit VOBU including the sub-picture data.
  • sub-picture data which has been stored in a DVD in the form of bit-mapped image data is converted into character data by using character recognition algorithms (S34).
  • character recognition algorithms like General optical character recognition (OCR) methods like artificial neural networks (ANNs)-based method can be applied.
  • OCR optical character recognition
  • ANNs-based character recognition algorithm a training step is needed to determine the weights of ANNs and to map the output of the ANNs to the corresponding character code.
  • SOM self organizing map
  • a mapping that maps the output of the SOM to one of distinct classes of character codes is then determined and used for a bit-mapped character classifier in a recognition step.
  • character images are extracted from sub-picture data of bit-mapped image one after another.
  • Each of character images is converted into a black-and-white bit-mapped image and is then applied to the character classifier.
  • caption images of sub-picture data are converted into character codes and are then stored in the memory and used for display. It is possible to display additional information by using character codes, for example, the meaning of words while the caption is displayed on a screen.
  • the addresses pointing to the two tables are stored in the corresponding row of the "PTT table", as shown in FIG. 12 .
  • the caption images of sub-picture data can be directly stored in the memory 12 and used for display.
  • the three pointers of FIG. 12 , P1x, P2x, and P3x are used to point to the start point or range of captions listed in a caption display window that appear on a screen during playback, as shown in FIG. 14 .
  • P1x, P2x, and P3x point to one entry of the PTT table, sub-picture table, and sub-picture search table, respectively, and they are updated when the video title is played back by the microcomputer 11.
  • FIG. 13 depicts a block diagram showing another embodiment of the optical disk reproduction apparatus according to the present invention which is embodied in a personal computer.
  • This embodiment comprises an optical disk driver 201 and a personal computer 202, both of which are connected to each other through a digital interference 100.
  • the optical disk driver part comprises an optical pickup 2 for reading out information recorded in an optical disk; an RF demodulator 3 for demodulating the signal detected by the optical pickup; a digital signal processor 4 for processing the demodulated binary signal to obtain digital data; a servo unit 7 for servo-controlling a driving unit of the optical disk; a sled motor 13 for moving the optical pickup in the radial direction of the optical disk; a spindle motor 14 for rotating the optical disk; a sync clock generator 8 for generating a clock synchronized with the binary signal from the RF demodulator and outputting it to the digital signal processor 4; a microcomputer 11' for controlling the servo unit and the digital signal processor 4, and communicating with an external device; a memory 12 for storing control data for the microcomputer.
  • the personal computer part comprises a memory 22 for storing data transmitted from the optical disk driver through the digital interface 100; an A/V signal processor 25 for decompressing audio and video data stream read out from the memory; a display overlay unit 29 for displaying character signal in a caption display window in superposed relationship to an image signal; a mixing unit 26 for adding character signal of the display overlay unit to the image signal produced by the A/V signal processor 25; a video card 30 for outputting the mixed image signal to an external display unit; a central processing unit (CPU) 21 for controlling the mixing unit as well as above-mentioned components according to commands entered from keyboard 23 or pointing device; and a hard disk 40 for storing software programs.
  • CPU central processing unit
  • the reproduction operation in the optical disk reproduction apparatus of FIG. 13 is as follows.
  • the microcomputer 11' receives control commands from an personal computer and controls the digital signal processor 4 and the servo unit 7 according to the commands, so that data stored in the optical disk is reproduced and sent it to the personal computer through the digital interface 100.
  • the data is stored in the memory 22 temporarily and is then inputted to the A/V signal processor 25.
  • These operations such as control of the optical disk driver 201 and data communication through the digital interface 100 are performed by loading a program stored in the hard disk 40 into the memory 22 and executing the program on the CPU 21.
  • the method of creating caption-based moving picture data search information in the embodiment of FIG. 13 is the same as that of the foregoing embodiment of FIG. 10 except that, after the caption-based moving picture data search information is created, it is stored in the hard disk 40 as a file in order to avoid a redundant creation operation that takes place when the same optical disk is inserted in the optical disk driver. To do this, once an optical disk is loaded, the volume ID on the disk is identified. It is then checked whether or not a file which contains the caption-based moving picture data search information corresponding to the volume ID has been stored on the hard disk 40. If the corresponding file does not exist, a new caption-based moving picture data search information is created and stored in the hard disk 40. Otherwise, the corresponding file is read into the memory and used to perform caption-based search of moving picture data.
  • the caption-based search table for moving picture data such as sub-picture search table of FIG. 12 is created in this way, when a viewer selects a particular caption data, the location of the video object unit VOBU which is linked to the selected caption data is obtained with reference to the corresponding entry of the sub-picture search table.
  • FIG. 14 illustrates a caption display window according to the present invention, which is displayed at the corner of the main image display window (optionally in full-size window).
  • the caption display window has a scroll bar by which a viewer can choose any caption included in video titles.
  • the viewer can search for any moving picture data linked to the selected caption and resume to reproduce the video title at the located moving picture data.
  • the operations for caption selection on the caption display window and the resulting search of the corresponding moving picture are described below in detail with reference to a flowchart of FIG. 15 .
  • VTS On specifying a video title set, VTS (S50), a file containing video title set information corresponding to the specified VTS, say, VTS_0N_0.IFO is read out to obtain the start/end location of the VTS, attributes of video/audio/sub-picture data, and PTT (S51). And then, the video objects VOB belonging to the specified VTS begins to be reproduced (S52). Meanwhile, among the caption data which have been stored as text data in the memory 12 by application of character recognition algorithm, the caption data which are linked to moving picture data falling into a predetermined period of time centering the moving picture data being reproduced are outputted to the display overlay 9, so that they are superimposed on the image data by the mixing unit 6 and displayed on the caption display window (S53).
  • the logical block number LBN of the corresponding video object unit VOBU is retrieved from the sub-picture search table which was already made (S55), and then the optical pickup is jumped to the location of the corresponding VOBU.
  • three pointers for PTT table, sub-picture table, and sub-picture search table of FIG. 12 , P1x, P2x, and P3x are updated in accordance with the jump.
  • Video and audio packs in the located VOBU is read and then processed to be presented in accordance with playback control information contained in the navigation pack in the VOBU (S56). In this way, it is possible to search and display moving picture data which is linked to the selected caption on the caption display window.

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  • Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
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  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Television Signal Processing For Recording (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Image Analysis (AREA)
  • Studio Circuits (AREA)

Claims (10)

  1. Procédé de réalisation d'une recherche basée sur des légendes pour déplacer des données d'image d'un support de mémorisation, comprenant les étapes de :
    (a) créer et mémoriser des informations de liaison incluant des informations de légende et un emplacement de données d'image animée correspondantes à reproduire simultanément avec les informations de légende dans une structure de tableau, les informations de légende et l'emplacement des données d'image animée correspondantes ayant la même valeur d'index dans la structure de tableau ;
    (b) afficher une liste de légendes des informations de légende mémorisées, la liste de légendes affichée recouvrant les données d'image animée actuellement reproduites sur l'écran et étant liée à une séquence prédéterminée de données d'image animée avant et après les données d'image animée actuellement reproduites, les informations de légende correspondant aux données d'image animée actuellement reproduites étant spécifiquement marquées dans la liste de légendes conformément aux informations de liaison mémorisées ;
    (c) rechercher dans les informations de liaison créées l'emplacement de données d'image animée ayant la même valeur d'index que les informations de légende particulières lors de la sélection par un téléspectateur à partir de la liste de légendes affichée ; et
    (d) reprendre la reproduction de données d'image animée du support de mémorisation depuis l'emplacement des données d'image animée découvertes à ladite étape (c).
  2. Procédé selon la revendication 1, dans lequel les informations de liaison sont constituées de données de légende et d'un numéro de bloc logique de l'unité d'objet vidéo incluant les données de légende.
  3. Procédé selon la revendication 1, dans lequel les informations de légende sont des données d'image de caractères pixélisés.
  4. Procédé selon la revendication 3, dans lequel les informations de légende sont mémorisées dans la structure de tableau après avoir été converties en données de texte constituées de caractères.
  5. Procédé selon la revendication 1, dans lequel ladite étape (a) mémorise les informations de liaison dans un autre support de mémorisation, conjointement avec des informations identifiant le support de mémorisation.
  6. Procédé selon la revendication 5, dans lequel ladite étape (a) mémorise les informations de liaison sous forme de fichier dont le nom est déterminé sur la base d'un ID de volume du support de mémorisation.
  7. Procédé selon la revendication 6, comprenant en outre les étapes de :
    (e) détecter des informations d'ID unique d'un nouveau support de mémorisation ;
    (f) rechercher dans ledit autre support de mémorisation des informations de liaison incluant des informations de légende et un emplacement de données d'image animée, les informations de liaison étant associées aux informations d'ID unique détectées ; et
    (g) exécuter les étapes (b) à (d) sur la base des informations de liaison recherchées.
  8. Procédé selon la revendication 1, dans lequel chacune des informations de légende dans la structure de tableau a une pluralité de données de légende ayant chacune une langue différente, et ladite pluralité de données de légende a la même valeur d'index que les données d'image animée correspondantes.
  9. Procédé selon la revendication 1, dans lequel l'étape (a) comprend en outre les étapes de :
    (h) créer et mémoriser, par rapport à chaque titre, les informations de liaison dans une structure de tableau, si le support de mémorisation a plus d'un titre ; et
    (i) mémoriser des informations d'emplacement lorsque les informations de liaison créées pour chaque titre sont mémorisées dans une structure de tableau.
  10. Procédé selon la revendication 9, dans lequel l'étape (a) comprend en outre l'étape de :
    (j) mémoriser des informations concernant un ensemble d'informations de légende incluses dans un titre correspondant, de manière liée aux informations d'emplacement des informations de liaison pour chaque titre.
EP99941844A 1999-05-19 1999-09-03 Procede de recherche de donnees d'images animees sur la base d'informations de recherche de donnees d'images animees fondees sur des legendes Expired - Lifetime EP1214712B1 (fr)

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KR1019990018124A KR100326400B1 (ko) 1999-05-19 1999-05-19 자막지향 탐색정보 생성 및 탐색방법과, 이를 사용하는 재생장치
PCT/KR1999/000513 WO2000070613A1 (fr) 1999-05-19 1999-09-03 Procede de creation d'informations de recherche de donnees d'images animees fondees sur des legendes, recherche de donnees d'images animees sur la base de telles informations, et appareil de reproduction utilisant ce procede

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US20030039469A1 (en) 2003-02-27
EP1214712A1 (fr) 2002-06-19
DE69939910D1 (de) 2008-12-24
US6754435B2 (en) 2004-06-22
JP3949893B2 (ja) 2007-07-25
KR100326400B1 (ko) 2002-03-12
WO2000070613A1 (fr) 2000-11-23
JP2003500785A (ja) 2003-01-07
AU5532799A (en) 2000-12-05
KR20000074305A (ko) 2000-12-15
ATE414317T1 (de) 2008-11-15

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